Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
APRS station JH1TWC-9 - show graphs
Location: 35°56.13' N 139°29.16' E - locator PM95RW84HM - show map
9.1 km East bearing 105° from Sakado, Saitama, Japan [?]
16.3 km East bearing 90° from Morohongō, Saitama, Japan
33.0 km Northwest bearing 326° from Tokyo, Tōkyō, Japan
56.0 km North bearing 345° from Yokohama-shi, Kanagawa, Japan
Last position: 2025-07-04 03:48:05 UTC (4h16m ago)
2025-07-04 12:48:05 JST local time at Sakado, Japan [?]
Speed: 31 km/h
Device: Icom: IC-5100 (D-Star)
Last path: JH1TWC-9>API510 via DSTAR*,qAS,JP1YKW-IS (good)
Positions stored: 34849
Other SSIDs: JH1TWC-5
About this site
This page shows real-time information collected from the Automatic Position Reporting System Internet network (APRS-IS). APRS is used by amateur (ham) radio operators to transmit real-time position information, weather data, telemetry and messages over the radio. A vehicle equipped with a GPS receiver, a VHF transmitter or HF transceiver and a small computer device called a tracker transmits it's location, speed and course in a small data packet, which is then received by a nearby iGate receiving site which forwards the packet on the Internet. Systems connected to the Internet can send information on the APRS-IS without a radio transmitter, or collect and display information transmitted anywhere in the world.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS